EP 1249837 A2 20021016 - A method for decompressing a compressed audio signal
Title (en)
A method for decompressing a compressed audio signal
Title (de)
Ein Verfahren zur Dekomprimierung eines komprimierten Audiosignals
Title (fr)
Une méthode de décompression d'un signal audio comprimé
Publication
Application
Priority
FI 20010770 A 20010411
Abstract (en)
The invention relates to a method for decompressing a compressed audio signal. In the compression of an audio signal, samples of the audio signal are taken, the samples are compiled into sample sets comprising a given number of samples, and the sample sets are subjected to time-to-frequency conversion, to form spectrum components. In the method, the spectrum components are subjected to frequency-to-time conversion (16) to form a decompressed audio signal, only some of the spectrum components formed in the time-to-frequency conversion being used in the frequency-to-time conversion (16).
The sample sets comprising a specific number of samples, are subjected to time-to-frequency conversion to form spectrum components. Low frequency of spectrum components are subjected to frequency-to-time conversion to form a decompressed audio signal. Independent claims are included for the following: (1) Audio signal transmission system; (2) Audio signal decompressing device; and (3) Electronic device.
IPC 1-7
IPC 8 full level
G10L 19/02 (2006.01); G10L 21/04 (2006.01); G11B 20/00 (2006.01); G11B 20/10 (2006.01); G11B 27/00 (2006.01); G11B 27/10 (2006.01)
CPC (source: EP US)
G10L 19/0204 (2013.01 - EP US); G10L 21/04 (2013.01 - EP US); G11B 20/00007 (2013.01 - EP US); G11B 20/10527 (2013.01 - EP US); G11B 27/005 (2013.01 - EP US); G11B 27/105 (2013.01 - EP US); H04N 19/44 (2014.11 - EP US); G11B 2020/00014 (2013.01 - EP US); G11B 2020/10953 (2013.01 - EP US); G11B 2220/2545 (2013.01 - EP US); G11B 2220/2562 (2013.01 - EP US)
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR
Designated extension state (EPC)
AL LT LV MK RO SI
DOCDB simple family (publication)
EP 1249837 A2 20021016; EP 1249837 A3 20061018; FI 110729 B 20030314; FI 20010770 A0 20010411; FI 20010770 A 20021012; US 2002173969 A1 20021121
DOCDB simple family (application)
EP 02396050 A 20020411; FI 20010770 A 20010411; US 11945002 A 20020409